The steaming machine describes chemical modification in which the sol is formed in a covalent bond with the metal oxide particles.


The sol-gel technique is a method in which a metal alkoxide or an inorganic salt is solidified by a solution, a sol or a gel, and then heat-treated to form an oxide or other compound. This is a method widely used in material preparation research, such as Preparation of nanomaterials, anti-reflective coatings, organic-inorganic composites, ceramic fibers, etc. [1]. Treatment of fabrics with SiO2 or other metal oxide nanosols, drying to remove organic solvents, can form a layer of multi-space structure on the fabric surface Oxide xerogel film, while the original nanosol particles form a three-dimensional network structure [2-4]. The advantage of nanosol is that it is easy to carry out chemical and physical modification, so the use of modified nanosol can greatly change the fabric. Functionality [2]. Chemical modification is the bonding of additives and metal oxide particles in the form of covalent bonds during sol formation, such as chemical modification by co-hydrolysis of different metal alkoxides. This method can obtain a mixed metal oxide coating film; another chemical modification is accomplished by co-hydrolysis and co-polycondensation of a 3-alkoxysiloxane containing a pendant R group, by changing the R side group. Adjusting the properties of the nanosol film, such as when the R group is an alkyl group or a perfluoroalkyl group, a hydrophobic or oleophobic film can be obtained [3, 4], and the R group can also be converted into a dye or a biologically active substance to change The functionality of the nanosol film. Physical modification is to uniformly mix and fix the additive in the metal oxide without forming a covalent bond, such as adding a polymer. The sol-gel technique can be used to prepare the sol during the preparation of the sol. Micron, nanoscale

Even the physical and chemical modification of the molecular level greatly changes the application range of the sol, such as the addition of bioactive substances, dye molecules, nanoparticles, etc., and the application of the modified sol to textiles further expands the application of textiles. -The gel technology has the advantages of simple preparation process, easy operation, low reaction temperature and high product uniformity, and can form a complex inorganic oxide network structure on the surface of the fabric. This layer of gel is fixed on the surface of the fabric to improve the fiber. Surface chemistry gives the fabric a certain functionality.

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'The steamer describes chemical modification in the form of a covalent bond between the sol formation and the metal oxide particles.

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